Fixed a nullPointerException I encountered
Improved the .gitignore file
Merge remote-tracking branch 'upstream/master'

Conflicts:
	.gitignore
	liquibase-core/src/main/java/liquibase/diff/compare/core/ForeignKeyComparator.java
Added handling of BLOB-files located in the classpath
Merge pull request #183 from flyhard/master

Loading of BLOBs from classpath